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Uralborite

Formula:
Ca
 
2
[B
 
3
O
 
3
(OH)
 
5
·OB(OH)
 
3
]
System:MonoclinicColour:Colourless
Hardness:4
Name:The name reflects its discovery locality and composition: a borate.
This page provides mineralogical data about Uralborite.

Classification of Uralborite

IMA status:Approved
Strunz 8th edition ID:5/H.08-10
Nickel-Strunz 10th (pending) edition ID:6.DA.35

6 : BORATES
D : Tetraborates
A : Neso-tetraborates
Dana 8th edition ID:25.3.4.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
Hey's CIM Ref.:9.3.4

9 : Borates
3 : Borates of Ca and Sr
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Type Occurrence of Uralborite

Type Locality:Novofrolovskoye B-Cu deposit, Turjinsk, Turya river, Krasnoturjinsk (Bogolovsk; Krasnotur'insk; Krasnoturyinsk), Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia
Year of Discovery:1961

Physical Properties of Uralborite

Diaphaneity (Transparency):Transparent
Colour:Colourless
Hardness (Mohs):4

Crystallography of Uralborite

Crystal System:Monoclinic
Cell Parameters:a = 6.88Å, b = 12.3Å, c = 9.79Å
β = 97.27°
Ratio:a:b:c = 0.559 : 1 : 0.796
Unit Cell Volume:V 821.81 ų (Calculated from Unit Cell)

Optical Data of Uralborite

Type:Biaxial (+)
RI values: nα = 1.604 nβ = 1.609 nγ = 1.615
Maximum Birefringence:δ = 0.011

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v

Chemical Properties of Uralborite

Formula:
Ca
 
2
[B
 
3
O
 
3
(OH)
 
5
·OB(OH)
 
3
]
Idealised Formula:
Ca[B
 
2
O
 
2
(OH)
 
4
]
Essential elements:B, Ca, H, O
All elements listed in formula:B, Ca, H, O

Relationship of Uralborite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.DA.10Borax
Na
 
2
[B
 
4
O
 
7
] · 10H
 
2
O
6.DA.15Tincalconite
Na
 
2
[B
 
4
O
 
7
] · 5H
 
2
O
6.DA.20Hungchaoite
Mg[B
 
4
O
 
7
] · 9H
 
2
O
6.DA.25Fedorovskite
Ca
 
2
(Mg,Mn
2+
 
)
 
2
[(OH)
 
6
|B
 
4
O
 
7
]
6.DA.25Roweite
Ca
 
2
Mn
2+
2
[(OH)
 
6
|B
 
4
O
 
7
]
6.DA.30Hydrochlorborite
Ca
 
4
B
 
8
O
 
15
Cl
 
2
·21H
 
2
O
6.DA.40Borcarite
Ca
 
4
Mg[(CO
 
3
)
 
2
|B
 
4
O
 
6
(OH)
 
6
]
6.DA.40Numanoite
Ca
 
4
Cu[(CO
 
3
)
 
2
|B
 
4
O
 
6
(OH)
 
6
]
Related Minerals - Hey's Index Grouping:

- +
9.3.1Calciborite
Ca[B
 
2
O
 
4
]
9.3.2Sibirskite
Ca
 
2
[(OH)(B
 
2
O
 
4
(OH))]
9.3.3Fabianite
CaB
 
3
O
 
5
OH
9.3.5Vimsite
CaB
 
2
O
 
2
(OH)
 
4
9.3.6Olshanskyite
Ca
 
3
[OH|{B(OH)
 
4
}
 
2
]
 
2
9.3.7Frolovite
Ca[B(OH)
 
4
]
 
2
9.3.8Korzhinskite
CaB
 
2
O
 
4
·H
 
2
O
9.3.9Tyretskite
Ca
 
2
B
 
5
O
 
9
OH·H
 
2
O
9.3.10Nifontovite
CaB
 
2
O
 
4
·2.3H
 
2
O
9.3.12Inyoite
Ca(H
 
4
B
 
3
O
 
7
)(OH) · 4H
 
2
O
9.3.13Gowerite
Ca[B
 
5
O
 
8
(OH)][B(OH)
 
3
]·3H
 
2
O
9.3.14Colemanite
Ca[B
 
3
O
 
4
(OH)
 
3
] · H
 
2
O
9.3.15Pentahydroborite
CaB
 
2
O(OH)
 
6
 · 2H
 
2
O
9.3.16Hexahydroborite
Ca[B(OH)
 
4
]
 
2
 · 6H
 
2
O
9.3.17Meyerhofferite
Ca
 
2
(H
 
3
B
 
3
O
 
7
)
 
2
 · 4H
 
2
O
9.3.18Priceite
Ca
 
2
B
 
5
O
 
7
(OH)
 
5
·H
 
2
O
9.3.19Ginorite
Ca
 
2
B
 
14
O
 
23
·8H
 
2
O
9.3.20Probertite
NaCaB
 
5
O
 
7
(OH)
 
4
·3H
 
2
O
9.3.21Ulexite
NaCa[B
 
5
O
 
6
(OH)
 
6
] · 5H
 
2
O
9.3.22Hydroboracite
CaMg[B
 
3
O
 
4
(OH)
 
3
]
 
2
 · 3H
 
2
O
9.3.23Inderborite
CaMg(H
 
3
B
 
3
O
 
7
)
 
2
 · 8H
 
2
O
9.3.24Wardsmithite
Ca
 
5
Mg[B
 
4
O
 
7
]
 
6
 · 30H
 
2
O
9.3.25Henmilite
Ca
 
2
Cu(OH)
 
4
|[B(OH)
 
4
]
 
2
9.3.26Strontioborite
SrB
 
8
O
 
11
(OH)
 
4
9.3.27Veatchite
Sr
 
2
B
 
11
O
 
16
(OH)
 
5
·H
 
2
O
9.3.28Veatchite-A
Sr
 
2
B
 
11
O
 
16
(OH)
 
5
·H
 
2
O
9.3.29 P-Veatchite
9.3.30 Balavinskite
Sr
 
2
B
 
6
O
 
11
·4H
 
2
O
9.3.31Tunellite
SrB
 
6
O
 
9
(OH)
 
2
·3H
 
2
O
9.3.32Strontioginorite
(Sr,Ca)
 
2
B
 
14
O
 
23
·8H
 
2
O

Other Names for Uralborite

Other Languages:
German:Uralborit
Russian:Уралборит
Spanish:Uralborita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Uralborite

Reference List:Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1961): 90: 673-681.

American Mineralogist (1962): 47: 1482.

Soviet Physics – Doklady: 14: 1044-1046.

European Journal of Mineralogy (1997): 9: 228.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Uralborite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Uralborite in the Natural History Museum (London) online catalogue
  • Uralborite details from Handbook of Mineralogy (PDF)
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    Localities for Uralborite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Japan
     
    • Honshu Island
      • Chugoku Region
        • Okayama Prefecture
          • Takahashi
            • Bitchu-cho (Bicchu-cho)
    		Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71
    Russia
     
    • Urals Region
      • Middle Urals
        • Ekaterinburgskaya (Sverdlovskaya) Oblast'
          • Krasnoturjinsk (Bogolovsk; Krasnotur'insk; Krasnoturyinsk)
            • Turya river
              • Turjinsk
    		[AmMin 85:1322]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 4th Nov 2009 12:48:09